TCEC Cup 9

[Jouni]

[pgn]
[Event "TCEC Cup 9 Semifinal"]
[Site "https://tcec-chess.com"]
[Date "2021.10.27"]
[Round "1.50"]
[White "LCZero 0.28-dev+_609958"]
[Black "KomodoDragon 2.5.1"]
[Result "1-0"]
[Annotator "archive"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Be2 Ngxe5 7. Nc3 O-O 8. O-O Re8 9. Nd2 d6 10. Nde4 Bb6 11. h3 Be6 12. Nd5 Qh4 13. Nec3 Nd7 14. b3 Ne7 15. a4 c6 16. Nf4 Bf5 17. a5 Bc5 18. g3 Qf6 19. Bb2 Ng6 20. Nh5 Qg5 21. Kh2 Nf6 22. Nxf6+ Qxf6 23. Na4 Qg5 24. a6 bxa6 25. Bf3 Rac8 26. Bc3 Nf8 27. b4 Bb6 28. Nxb6 axb6 29. Rxa6 Be6 30. Be2 b5 31. Qxd6 Bxc4 32. Bxc4 bxc4 33. h4 Qf5 34. Qd4 Ne6 35. Qxc4 Qf3 36. Ra2 h6 37. Rc1 Rcd8 38. Rac2 Re7 39. Be1 Rc7 40. Ra2 Rb8 41. Rb2 Re8 42. Rd2 Rb8 43. Rd6 c5 44. b5 Rcb7 45. Rb1 Nc7 46. Qxc5 Nxb5 47. Rc6 Qg4 48. Rb4 Qd7 49. Kg2 Qe8 50. Rc4 Re7 51. Rc8 Qxc8 52. Qxc8+ Rxc8 53. Rxc8+ Kh7 54. g4 Ra7 55. Rc4 Ra1 56. Kf1 Nd6 57. Rd4 Ne8 58. f3 Ra8 59. Ke2 Kg8 60. Rd3 Nf6 61. Bc3 Nh7 62. f4 Nf8 63. Be1 Ne6 64. Rd5 Rb8 65. Bc3 Nf8 66. Kf3 Ng6 67. Kg3 Nf8 68. Bd4 Ra8 69. Rb5 Ne6 70. Kf3 Re8 71. Be5 Nf8 72. Rb8 Rxb8 73. Bxb8 h5 74. g5 Ng6 75. Kg3 Nf8 76. Bd6 Nd7 77. Kf3 Nb6 78. Bc5 Nd7 79. Be7 Ne5+ 80. fxe5 g6 81. Ke4 Kg7 82. Kd5 Kh7 83. e6 Kg8 84. Bc5 fxe6+ 85. Kxe6 Kg7 86. e4 Kg8 87. Kf6 Kh7 88. e5 Kg8 89. Kxg6 Kh8 90. e6 Kg8 91. e7 Kh8 92. e8=R#
[/pgn]

I post buggy pgn and thread crashed! My question was : Did Dragon blunder somewhere?

[JohnW]

Interesting game, I wonder why LCZero promoted to a Rook instead of Queen on the last move..

[peter]

[pgn]
[Event "TCEC Cup 9 Semifinal"]
[Site "https://tcec-chess.com"]
[Date "2021.10.27"]
[Round "1.50"]
[White "LCZero 0.28-dev+_609958"]
[Black "KomodoDragon 2.5.1"]
[Result "1-0"]
[Annotator "archive"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Be2 Ngxe5 7. Nc3 O-O 8. O-O Re8 9. Nd2 d6 10. Nde4 Bb6 11. h3 Be6 12. Nd5 Qh4 13. Nec3 Nd7 14. b3 Ne7 15. a4 c6 16. Nf4 Bf5 17. a5 Bc5 18. g3 Qf6 19. Bb2 Ng6 20. Nh5 Qg5 21. Kh2 Nf6 22. Nxf6+ Qxf6 23. Na4 Qg5 24. a6 bxa6 25. Bf3 Rac8 26. Bc3 Nf8 27. b4 Bb6 28. Nxb6 axb6 29. Rxa6 Be6 30. Be2 b5 31. Qxd6 Bxc4 32. Bxc4 bxc4 33. h4 Qf5 34. Qd4 Ne6 35. Qxc4 Qf3 36. Ra2 h6 37. Rc1 Rcd8 38. Rac2 Re7 39. Be1 Rc7 40. Ra2 Rb8 41. Rb2 Re8 42. Rd2 Rb8 43. Rd6 c5 44. b5 Rcb7 45. Rb1 Nc7 46. Qxc5 Nxb5 47. Rc6 Qg4 48. Rb4 Qd7 49. Kg2 Qe8 50. Rc4 Re7 51. Rc8 Qxc8 52. Qxc8+ Rxc8 53. Rxc8+ Kh7 54. g4 Ra7 55. Rc4 Ra1 56. Kf1 Nd6 57. Rd4 Ne8 58. f3 Ra8 59. Ke2 Kg8 60. Rd3 Nf6 61. Bc3 Nh7 62. f4 Nf8 63. Be1 Ne6 64. Rd5 Rb8 65. Bc3 Nf8 66. Kf3 Ng6 67. Kg3 Nf8 68. Bd4 Ra8 69. Rb5 Ne6 70. Kf3 Re8 71. Be5 Nf8 72. Rb8 Rxb8 73. Bxb8 h5 74. g5 Ng6 75. Kg3 Nf8 76. Bd6 Nd7 77. Kf3 Nb6 78. Bc5 Nd7 79. Be7 Ne5+ 80. fxe5 g6 81. Ke4 Kg7 82. Kd5 Kh7 83. e6 Kg8 84. Bc5 fxe6+ 85. Kxe6 Kg7 86. e4 Kg8 87. Kf6 Kh7 88. e5 Kg8 89. Kxg6 Kh8 90. e6 Kg8 91. e7 Kh8 92. e8=R#
[/pgn]

I post buggy pgn and thread crashed! My question was : Did Dragon blunder somewhere?

45...Nc7 might have been latest decisive ?, if it wasn't lost earlier already, advantage after book- end was 0.73 as for komodo- eval.
Here's TCEC- output between 44 and 47:

Code: Select all

44.b5 { d=24, sd=58, pd=c5, mt=1803, tl=999652, s=51889, n=4969629, pv=b5 Rcb7 Rb1 Nc7 Qxc5 Rxb5 Rxb5 Nxb5 Rd7 Qe2 Qb4 Qf3 Qb3 Qf5 Rd5 Qe6 Ba5 Qe8 Qc4 Qe6 e4 Kh7 Qd3 Na7 Bc3 Nc6 Rc5 Re8 h5 Kg8 Kg2 Nd8 Qd5 Qa6 Qd7 Rf8 Bb4 Qe6 Qxe6 Nxe6 Rc4 Ra8 f4 Ra4 Kf3 Kh7 e5 g6 hxg6+ Kxg6 g4 Kh7, tb=2, h=0.0, ph=91.4, wv=0.77, R50=50, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 44...Rcb7 { d=40, sd=40, pd=b5, mt=66778, tl=152848, s=56019171, n=3740904190, pv=Rcb7 Rb1 g5 b6 Qf5 e4 Qg4 Qd3 c4 Qxc4 gxh4 Qd3 Nc5 Qe3 hxg3+ Qxg3 Qxg3+ fxg3 Nxe4 Rc6 Kh7 Kg2 Ra8 Rb2 Ra6 Kf3 Ng5+ Kf2 Ne6 Ke3 Ra1 Bc3 Rg1 Kf2 Rc1 Rb4 Rd1 Rb5 Rd3 Be5 Kg6 Ke2 Ra3 Kd2 h5 Bc7 Ra6 Rc4 Ra3 Rb2 Kf6 Kc2 Ra6 Rbb4 Ra5 Kc3 Rd5 Rb2, tb=6496469, h=38.8, ph=77.1, wv=1.28, R50=49, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 45.Rb1 { d=28, sd=62, pd=Rcb7, mt=4465, tl=1000187, s=82547, n=5201141, pv=Rb1 Nc7 Qxc5 Rxb5 Rxb5 Nxb5 Rd7 Qe2 Qb4 Qf3 Qb3 Qf5 Rd5 Qe6 Ba5 Qe8 Qc4 Qe6 e4 Kh7 Qd3 Na7 Bc3 Nc6 Rc5 Rd8 Qc4 Qxc4 Rxc4 Na7 Rc5 Rb8 Be5 Rb7 h5 Nb5 Rc4 Re7 Bf4 Na3 Ra4 Nb5 Rb4 Nc3 f3 Ra7 Rb3 Ra2+ Kh3 Nd1 g4 Nf2+ Kh4 Re2 Be3 Nd1, tb=7, h=0.0, ph=91.6, wv=0.78, R50=49, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 45...Nc7 { d=37, sd=37, pd=Rb1, mt=31408, tl=126440, s=66431429, n=2086478407, pv=Nc7 Rd7 Qf5 Rbd1 Nxb5 Rxb7 Rxb7 Rd5 Qf6 Qxc5 Rb8 Kg2 Qa6 e4 Na3 Bd2 Rc8 Qe7 Nc2 Rd7 Rf8 Qc5 Qa4 Re7 Qa3 Rc7 Qxc5 Rxc5 Nd4 Rd5 Ne6 f4 Ra8 Kf3 Ra3+ Ke2 g6 g4 Rh3 f5 gxf5 exf5 Ng7 Rd8+ Kh7 Rd7 Rxh4 Rxf7 Kg8, tb=1153215, h=17.4, ph=77.7, wv=1.35, R50=48, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 46.Qxc5 { d=28, sd=58, pd=Nc7, mt=39579, tl=965608, s=106769, n=7180438, pv=Qxc5 Rxb5 Rxb5 Nxb5 Rd7 Qe2 Qb4 Qf3 Qb3 Qf5 Rd5 Qe6 Ba5 Qe8 Qc4 Qe6 g4 h5 gxh5 Nd6 Qd4 Nf5 Qe5 Qxe5+ Rxe5 Nh6 Rd5 Kh7 Bc7 Rb4 Bf4 f6 Kg3 Rc4 f3 Rc1 e4 Rg1+ Kh2 Ra1 Kg2 Rb1 Be3 Rb3, tb=251, h=0.0, ph=91.8, wv=0.94, R50=50, Rd=-11, Rr=-1000, mb=+2-1+1+0+0, } 46...Nxb5 { d=37, sd=37, pd=Rd7, mt=9501, tl=121939, s=60282381, n=572742875, pv=Nxb5 Rc6 Na7 Rxb7 Rxb7 Ra6 Rb2 Qc1 Rb7 Rd6 Rb8 Qc4 Rf8 Qf4 Qxf4 gxf4 Nb5 Rd3 Rc8 Kg3 Rc1 Bd2 Rc6 Rd5 Nd6 Kf3 Kh7 Bb4 Ne8 Ra5 Rc8 Ba3 Nf6 Bb2 Re8 Bd4 Re7 Ra6 Ne4 h5 Re8 Ra7 Kg8 Rc7 Nd2+ Ke2 Ne4 Rc6 Kh7 Ra6 Kg8, tb=179776, h=5.8, ph=75.6, wv=1.17, R50=50, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 47.Rc6 { d=23, sd=61, pd=Rxb5, mt=35080, tl=935528, s=85250, n=4607229, pv=Rc6 Qg4 Rb4 Qd7 Kg2 Qe8 Rc4 Re7 Qf5 Re5 Qg4 h5 Qf4 f6 Rc1 Qe7 Qa4 Kh7 Kh2 Kh6 Rd1 Rb7 g4 hxg4 Qxg4 Rc7 Ra6 Kh7 Ba5 Rb7 Rd8 Nc7 Rd7 Nxa6 Rxe7 Rbxe7 Bc3 Rc5 Bd4 Rd5 h5 Rg5, tb=61, h=0.0, ph=89.4, wv=1.02, R50=49, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 47...Qg4 { d=33, sd=33, pd=Rc6, mt=25148, tl=101791, s=59543749, n=1497465768, pv=Qg4 Rb4 Qd7 h5 Kh8 Kg2 Kg8 Rc4 Re8 Ba5 Re6 Rc8+ Re8 g4 Rxc8 Qxc8+ Qxc8 Rxc8+ Kh7 Rc5 Nd6 Rc6 Ne4 Bb6 Rd7 Bd4 Ng5 Rc4 Ne6 f4 Rb7 Kf2 Rb1 Be5 Rh1 Bd6 Rh2+ Kg3 Rh1 Rb4 Rg1+ Kf3, tb=251017, h=14.0, ph=76.3, wv=1.58, R50=49, Rd=-11, Rr=-1000, mb=+1-1+1+0+0, } 

SF after 45.Rb1:


[fen]1r4k1/1r3pp1/3Rn2p/1Pp5/2Q4P/4PqP1/5P1K/1R2B3 b - - 0 1[/fen]


Analysis by Stockfish 211021:

45...g5 46.b6 Qf5 47.e4 Qg4 48.Qd3 c4 49.Qxc4 gxh4 50.Qd3 Nc5 51.Qe3 Qxe4 52.Qxe4 hxg3+ 53.fxg3 Nxe4 54.Rc6 Ng5 55.Bf2 Kh7 56.Kg2 Ra8 57.Rbc1 Ra6 58.R1c2 Rb8 59.Rb2 Rb7 60.Bd4 Ne6 61.Bc3 Nd8 62.Rd6 Ne6 63.Rb5 Ra2+ 64.Bb2 Ra4 65.Kf2 Rc4 66.Be5 Rc8 67.Ke3 Rc4 68.Kd3 Rc8 69.Bd4 Nxd4 70.Kxd4 Rc1 71.Rb4 Kg7 72.Rb3 Kh7
+/- (1.26) Depth: 46/57 00:00:37 1181MN, tb=1294155


And after 45...Nc7(?):


[fen]1r4k1/1rn2pp1/3R3p/1Pp5/2Q4P/4PqP1/5P1K/1R2B3 w - - 0 1[/fen]


Analysis by Stockfish 211021:

46.Qxc5 Nxb5 47.Rc6 Na7 48.Rxb7 Rxb7 49.Rd6 Rb2 50.Kg1 Ra2 51.Qd5 Qxd5 52.Rxd5 Rc2 53.h5 Nc6 54.g4 f6 55.f4 Re2 56.Bf2 Rc2 57.Kg2 Rc1 58.Kf3 Nb4 59.Rd8+ Kf7 60.Rd7+ Kg8 61.Ke2 Rc2+ 62.Rd2 Rc8 63.Rd4 Rb8 64.Rd6 Kf8 65.Be1 Ke7 66.Rd1 Nc6 67.Bc3 Nd8 68.Kf3 Ne6 69.Ke4 Rb7 70.Ra1 Nc7 71.Bd4 Kf7 72.Ra7 Rxa7 73.Bxa7 g6
+- (1.70) Depth: 49/65 00:00:17 608MN, tb=341861

Both outputs after some Forward- Backward regards